Industry Resources

Broomrape

Broomrapes are parasitic plants that attack a broad range of high-value broadleaf crops — including tomato, cabbage, potato, eggplant, carrot, pepper, beans, celery, peanut, and sunflower.

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UCD Broomrape Website

Access relevant resources, all in one place

The UC Davis Broomrape Research Website is a central resource for current research, educational materials, and project updates related to broomrape management. The website is currently focused on processing tomato but can be expanded.

Branched broomrape in flower, with pale yellow stems and lavender blooms
Tomato plants with ripening fruit growing in field soil

Compliance Agreements

Recommendations for meeting compliance agreements

UC Davis has developed guidance and best management practices to help processing tomato growers and industry members meet California Department of Food and Agriculture (CDFA) compliance agreement requirements.

Educational Tools

Access online resources

The UC Davis Broomrape Research YouTube Channel provides educational videos supporting broomrape identification, training, outreach, and industry awareness, with additional content planned as research progresses.

Processing tomato harvester and tractor working a field
Illustration of a tomato plant beside a flowering broomrape stalk

GDD Calculator

Obtain relevant data

Tracks cumulative Growing Degree Day (GDD) and predicts developmental stages of branched broomrape (Phelipanche ramosa L.) since transplanting (Base Temp = 10 °C / 50 °F), using observed weather, a 16-day forecast, and 5-year historical averages for dates beyond the forecast horizon.